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Biochemical Oxygen Demand (BOD) in a riv...

Biochemical Oxygen Demand (BOD) in a river water

A

remains unchanged when algal bloom occurs

B

has no relationship with concentration of oxygen in the water

C

gives a meaure of Salmonella in the water

D

increases when sewage gets mixed with river water

Text Solution

Verified by Experts

The correct Answer is:
D
When sewage gets mixed with river water, BOD will increase. Biochemical Oxygen Demand (BOD) is the amount of oxygen used for biochemical oxidation of organic mater by microorganism in a unit volume of water. Polluted water has high BOD.
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